Viva Italia Tomato sauce can be annoying on kids' faces and dry-clean-only clothes, but it's one of the best things to include in your diet. Tomato sauce reduces blood pressure as much as any pill reduces plaque in your arteries, and it's linked to lower cancer rates. Shoot for 10 tablespoons of tomato sauce a week.

Raw tomatoes won't do it, however. You'd have to eat 165 raw tomatoes to get the equivalent amount of lycopene—the ingredient that's thought to do much of the good work.